(5+i)+(7-2i)=

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Solution for (5+i)+(7-2i)= equation:


Simplifying
(5 + i) + (7 + -2i) = 0

Remove parenthesis around (5 + i)
5 + i + (7 + -2i) = 0

Remove parenthesis around (7 + -2i)
5 + i + 7 + -2i = 0

Reorder the terms:
5 + 7 + i + -2i = 0

Combine like terms: 5 + 7 = 12
12 + i + -2i = 0

Combine like terms: i + -2i = -1i
12 + -1i = 0

Solving
12 + -1i = 0

Solving for variable 'i'.

Move all terms containing i to the left, all other terms to the right.

Add '-12' to each side of the equation.
12 + -12 + -1i = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -1i = 0 + -12
-1i = 0 + -12

Combine like terms: 0 + -12 = -12
-1i = -12

Divide each side by '-1'.
i = 12

Simplifying
i = 12

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